Question

what was the starting point in learning about the behavior of atoms and molecules?​

Answer 1

Explanation:

Around 450 B.C., the Greek philosopher Democritus introduced the idea of the atom. However, the idea was essentially forgotten for more than 2000 years. In 1800, John Dalton re-introduced the atom. He provided evidence for atoms and developed atomic theory.

Answer 2

Explanation:

First we learn about things in kindergarten.

Then in Play School we learn about states of objects.

In class 4th we learn of matter.

In class 7th we learn of natural calamities, physics experiments and chemical changes which are through the matter.

And then in class 10 we finally learn of matter briefly.